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| -rw-r--r-- | zgrep.in | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/zgrep.in b/zgrep.in new file mode 100644 index 0000000..3d9e8f3 --- /dev/null +++ b/zgrep.in @@ -0,0 +1,142 @@ +#! /bin/sh +# Zgrep - Grep wrapper for compressed files. +# Copyright (C) 2008, 2009 Antonio Diaz Diaz. +# +# This script is free software: you have unlimited permission +# to copy, distribute and modify it. + +LC_ALL=C +export LC_ALL +invocation_name=$0 +args= +default_prog=lzip +have_pat=0 +list=0 +no_name=0 + +# Loop over args until pattern is found +while [ x"$1" != x ] ; do + + case "$1" in + --help | --he* | -h) + echo "Zgrep - Grep wrapper for compressed files." + echo + echo "Zgrep is a wrapper script around the grep command that allows" + echo "transparent search on any combination of compressed and non-compressed" + echo "files. If any given file is compressed, its uncompressed content is" + echo "used. If a given file does not exist, zgrep tries the compressed file" + echo "name corresponding to the default compressor selected. The supported" + echo "compressors are gzip, bzip2, lzip and xz." + echo + echo "Usage: ${invocation_name} [OPTIONS] [GREP_OPTIONS] PATTERN [FILES]" + echo + echo "GREP_OPTIONS are passed directly to grep." + echo "The exit status from grep is preserved." + echo + echo "Options:" + echo " -h, --help display this help and exit" + echo " -V, --version output version information and exit" + echo " --gzip use gzip as default decompressor" + echo " --bzip2 use bzip2 as default decompressor" + echo " --lzip use lzip as default decompressor (default)" + echo " --xz use xz as default decompressor" + echo + echo "Report bugs to lzip-bug@nongnu.org" + echo "Lzip home page: http://www.nongnu.org/lzip/lzip.html" + exit 0 ;; + --version | --ve* | -V) + echo "Zgrep VERSION" + echo "Copyright (C) 2009 Antonio Diaz Diaz." + echo "This script is free software: you have unlimited permission" + echo "to copy, distribute and modify it." + exit 0 ;; + --gz*) + default_prog=gzip ;; + --bz*) + default_prog=bzip2 ;; + --lz*) + default_prog=lzip ;; + --xz*) + default_prog=xz ;; + -[drRzZ] | --di* | --exc* | --inc* | --nu* | --rec*) + echo "${invocation_name}: option $1 not supported" + exit 1 ;; + -e?* | -f?* | --file=* | --reg*=*) + args="${args} $1"; have_pat=1 ;; + -e | -f | --file | --reg*) + args="${args} $1 $2"; shift; have_pat=1 ;; + --*=*) + args="${args} $1" ;; + -[ABCDm] | --af* | --be* | --binary-* | --con* | --de* | --[lm]a*) + args="${args} $1 $2"; shift ;; + -l | --files-with-*) + args="${args} $1"; list=1 ;; + -h | --no-f*) + args="${args} $1"; no_name=1 ;; + --) + break ;; + -?*) + args="${args} $1" ;; + *) + if test ${have_pat} = 0; then args="${args} $1"; have_pat=1 + else break + fi ;; + esac + shift +done + +if test ${have_pat} = 0; then + echo "${invocation_name}: Pattern not found; use --help for usage." 1>&2 + exit 1 +fi + +if test $# -eq 0; then + ${default_prog} -cdfq | grep ${args} + exit $? +fi + +retval=0 +for i in "$@" ; do + prog="${default_prog} -cdfq" + case "$i" in + *.gz | *.tgz) + prog="gzip -cdfq" ;; + *.bz2 | *.tbz | *.tbz2) + prog="bzip2 -cdfq" ;; + *.lz | *.tlz) + prog="lzip -cdfq" ;; + *.xz | *.txz) + prog="xz -cdfq" ;; + *) + if test -f "$i"; then prog=cat + else + case ${default_prog} in + gzip) + if test -f "$i.gz"; then i="$i.gz"; fi ;; + bzip2) + if test -f "$i.bz2"; then i="$i.bz2"; fi ;; + lzip) + if test -f "$i.lz"; then i="$i.lz"; fi ;; + xz) + if test -f "$i.xz"; then i="$i.xz"; fi ;; + esac + fi ;; + esac + if test ${list} -eq 1; then + ${prog} -- "$i" | grep ${args} 2>&1 > /dev/null && echo "$i" + r=$? + elif test $# -eq 1 -o ${no_name} -eq 1; then + ${prog} -- "$i" | grep ${args} + r=$? + else + j=`printf "%s" "$i" | sed 's/\\\\/\\\\\\\\/g'` + j=`printf "%s" "$j" | sed 's/|/\\\\|/g'` + j=`printf "%s" "$j" | sed 's/&/\\\\&/g'` + j=`printf "%s" "$j" | tr '\n' ' '` + ${prog} -- "$i" | grep ${args} | sed "s|^|${j}:|" + r=$? + fi + test "$r" -ne 0 && retval="$r" +done + +exit ${retval} |